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Boiler fault Ariston Dia 20 mffi ce type c?

My boiler does something similar runs for 90 seconds then burner shuts off. Fitted new pump and board but not helped. Any suggestions. Ariston DIA 20 MFFI CE

David
December 2013

Ariston Heating, Home Heating Systems Fault 20 Type C

Found fault on Ariston DIA 20
It was the Venturi it had a parcial blockage,i removed plastic pipe from Air pressure switch to venturi,I connected a manometer hose to Venturi a quick blow to clear the obstruction I reconnected original plastic pipe
And the boiler works fine now. (Ps.the burner stays on a lot longer now than it did previously only shut off now when temp is satisfied)

David
January 2014

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Boiler fault Ariston Dia 20 mffi ce type c?

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